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First you should aggregate your data returned from the database.Use the SUM() function.The correct format should be this:
Date | Member
-------------------
2016-06-23 | 5
2016-06-24 | 10
In the controller you should have an array.
data = [{Date:"2016-0-23",Member:5},{Date:"2016-06-24",Member:10}];
To create a simple chart you need the data and labels.
vm.labels = data.map(function (property) {return propery.Date;});
vm.data = data.map(function (property) {return propery.Member;});
On the HTML page:
<canvas id="line" class="chart chart-line" chart-data="vm.data" chart-labels="vm.labels"></canvas>
Source:stackexchange.com